| APA | PIDF. (2012, February 15). In Acronym Geek. Retrieved 03:08, February 15, 2012, from http://www.acronymgeek.com/PIDF |
| MLA | "PIDF." Acronym Geek. (2012). Acronym Geek. 15 Feb 2012 <http://www.acronymgeek.com/PIDF>. |
| MHRA | 'PIDF', Acronym Geek, 15 February 2012, <http://www.acronymgeek.com/PIDF> [accessed 15 February 2012] |
| Chicago | "PIDF", http://www.acronymgeek.com/PIDF (accessed February 15, 2012). |
| CBE/CSE | PIDF [Internet]. Acronym Geek; 2012 Feb 15 [cited 2012 Feb 15]. Available from: http://www.acronymgeek.com/PIDF. |
| Bluebook | PIDF, http://www.acronymgeek.com/PIDF (last visited February 15, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, PIDF, http://www.acronymgeek.com/PIDF (optional description here) (as of Feb. 15, 2012, 03:08). |
| AMA | PIDF. Acronym Geek. February 15, 2012, 03:08. Available at: http://www.acronymgeek.com/PIDF. Accessed February 15, 2012, 03:08. |